WO2017067961A1 - Soupape thermostatique d'un système de refroidissement d'un moteur à combustion interne - Google Patents

Soupape thermostatique d'un système de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
WO2017067961A1
WO2017067961A1 PCT/EP2016/075042 EP2016075042W WO2017067961A1 WO 2017067961 A1 WO2017067961 A1 WO 2017067961A1 EP 2016075042 W EP2016075042 W EP 2016075042W WO 2017067961 A1 WO2017067961 A1 WO 2017067961A1
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WO
WIPO (PCT)
Prior art keywords
valve
coolant
coolant channel
housing
flow
Prior art date
Application number
PCT/EP2016/075042
Other languages
German (de)
English (en)
Inventor
Wilhelm Ardes
Original Assignee
Hengst Se & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hengst Se & Co. Kg filed Critical Hengst Se & Co. Kg
Publication of WO2017067961A1 publication Critical patent/WO2017067961A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1921—Control of temperature characterised by the use of electric means characterised by the type of controller using a thermal motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/04—Details using electrical heating elements

Definitions

  • the present invention relates to a thermostatic valve of a cooling system of an internal combustion engine, wherein the thermostatic valve has a housing with a connection flange, with which the housing can be attached to a flange of the internal combustion engine or arranged on the engine oil-coolant module, wherein in the flange radially inward Coolant to the internal combustion engine leading first coolant channel and radially outside of the first coolant channel surrounding a second, coolant from the engine supplying coolant channel is arranged, wherein the housing outside the connection flange, a third, coolant from a radiator feeding coolant channel is arranged, wherein in the housing concentric with the connection flange a hollow-cylindrical valve slide in its basic form of the temperature of the coolant is guided axially displaceably between two end positions, wherein the valve spool on the one hand vo n is acted upon by a valve spring and on the other hand by an adjustable actuator, wherein the valve spool in its one end position with cold coolant connects the
  • Thermostatic valves of the aforementioned type are known, for example from EP 2 270 621 B1, DE 20 2010 014 455 U1 and DE 10 2012 018 105 A1.
  • the known thermostatic valves is to be found disadvantageous that they form a relatively high flow resistance for the flowing coolant, which leads adversely to a high drive energy demand for a coolant pump of the cooling system.
  • This high propulsion energy requirement has a noticeably negative effect on the fuel consumption of the associated internal combustion engine.
  • the task is to provide a thermostatic valve, which forms a reduced flow resistance for the coolant flowing through and thus which contributes to a more favorable fuel consumption of an associated internal combustion engine.
  • thermostatic valve of the type mentioned, which is characterized in that in the first coolant channel radially inwardly of the valve spool a circumferential, a flow of coolant from the third coolant channel into the first coolant channel from a radially inward flow direction into an axially extending Flow direction deflecting the first flow guide is arranged and that in the second coolant channel radially outside of the valve slide a circumferential, a coolant flow from the second coolant passage in the first coolant passage from an axial flow direction in a radially inwardly extending flow direction deflecting second flow guide is arranged.
  • a significantly improved, low-resistance flow of the coolant in the thermostatic valve and by the thermostatic valve is advantageously achieved, which allows the use of a coolant pump lower power, ie with lower drive energy demand, in the cooling system, without taking a loss in the cooling capacity of the cooling system in purchasing have to.
  • thermostatic valve in the housing a rotationally symmetrical valve carrier connected to this is arranged, in which the valve slide and the valve spring are axially movably guided and supported in which releasable from the valve spool and closable flow-through window for a coolant flow from the third Coolant channel are arranged to the first coolant channel.
  • the housing has an upper-side opening concentric to the valve carrier, that the actuator has an oblong-cylindrical basic shape, and that the actuator protrudes sealingly into the housing through the opening in the valve carrier and the valve slide.
  • valve spool has a concentric with a housing inner end of the actuator central actuator contact region, which is connected via radial ribs or webs with the other valve spool.
  • a further embodiment of the thermostatic valve according to the invention provides that the first flow guide and / or the second flow guide releasably connected to the valve carrier, preferably screwed, are / is.
  • the flow guide can be replaced if necessary and it can be installed different, optimized for the particular application flow guide in the otherwise same thermostatic valve.
  • the invention provides that an automatic vent valve is arranged on the valve carrier and that the valve carrier can be connected in different rotational positions with the housing.
  • the valve carrier with the vent valve is then installed during installation of the thermostatic valve in the housing so that the vent valve comes to lie in the installed position of the thermostatic valve in its highest spatial area.
  • the position of the vent valve can be easily adapted to the respective mounting position of the thermostatic valve without dimensional changes in the thermostatic valve.
  • the actuator of the thermostatic valve is preferably provided that it is connectable in different rotational positions relative to the housing with this, preferably screwed.
  • the actuator can be adapted to different installation situations of the thermostatic valve, if necessary, for example, to achieve a favorable orientation of connection elements of the actuator, if this is an electrically operated actuator.
  • the valve spool has in its periphery a plurality of passage openings whose measured height in the axial direction in the circumferential direction of the valve spool varied. In other words, therefore, the passage openings at their axial edges are not simply running running in the circumferential direction, but have a specifically deviating course, for example, with obliquely and / or curved edges or edge portions.
  • the housing, the valve carrier, the valve slide and the flow guide injection molded plastic parts In order to manufacture the thermostatic valve cost-effectively in large quantities and to keep its weight low, preferably the housing, the valve carrier, the valve slide and the flow guide injection molded plastic parts.
  • thermostatic valve according to the invention has several advantages, because it offers optimized flow conditions in its interior, it allows a compact design, it has a low weight, it is inexpensive to produce and it can be dismantled without damage, so that each component can be exchanged or replaced individually In particular, the actuator is very easily replaceable.
  • FIG. 1 shows a thermostatic valve in a longitudinal section along the section line l-l in Figure a first operating state with cold coolant
  • FIG. 2 shows the thermostatic valve from FIG. 1 in the same longitudinal section, in a second operating state with warmer coolant
  • FIG. 3 shows the thermostatic valve of Figure 1 in the same longitudinal section, in a third operating state with hot coolant
  • FIG. 4 shows the thermostatic valve from FIGS. 1 to 3 in plan view, a housing of the thermostatic valve as a single part, in view obliquely from above, the housing of Figure 5, in view obliquely from below, a valve carrier of the thermostatic valve as a single part, in view obliquely from above, the valve carrier of Figure 7, in view obliquely from below, a valve spool of the thermostatic valve as a single part, in a first view obliquely from below, the valve spool of Figure 9 in a second, slightly rotated from Figure 9 view obliquely from below, a first flow of the thermostatic valve, in a view obliquely from above, the first flow guide from Figure 1 1, in view obliquely from below, a second flow baffle of the thermostatic valve, in a view obliquely from below, the second flow baffle of Figure 13, in a view obliquely from above, a first actuator of the thermostatic valve, in view,
  • Figure 20 shows the unit of Figure 19 in a view obliquely from below.
  • Figure 1 of the drawing shows a thermostatic valve 1 in longitudinal section along the section line l-l in Figure 4, in a first operating condition with cold coolant.
  • the thermostatic valve 1 has a bell-shaped or dome-shaped housing 10 in its basic form, which is open at its bottom and is formed there with a connection flange 18, with the thermostatic valve 1 with the interposition of a radial seal 15 to a mating flange 8 of an internal combustion engine or an an internal combustion engine arranged oil-coolant module is connected, as shown in Figure 1.
  • the thermostatic valve 1 has radially inwardly a first coolant channel 1 1 and radially outwardly thereof a radially outer second coolant channel 12 surrounding the first coolant channel 11.
  • the first coolant channel 11 is in fluid communication with a first radially inner coolant channel 81 in the counter flange 8 and leads from the thermostatic valve 1 to cooling areas of the associated internal combustion engine.
  • the second coolant channel 12 is in fluid communication with a second, radially outer coolant channel 82 in the counter flange 8 and leads from areas of the internal combustion engine to be cooled to the thermostatic valve 1.
  • a third coolant channel 13 extending in the radial direction of the housing 10, which is embodied as a connecting piece 13 ', to which a coolant hose coming from a radiator can be connected, opens into the housing 10.
  • a valve carrier 2 Concentrically in the housing 10, a valve carrier 2 is arranged, which has a sleeve-shaped upper part 21 with an upper front end 22, which is sealed axially against the housing 10 with the interposition of a seal 14. This is downstairs Upper part 21 in a radial middle part 23 via, at the radially outer region, a turn axially extending lower part 25 extends downwardly adjoins. The lower part 20 in turn goes over at its lower end in a radial, outwardly facing, flange-like foot 28. In the axial lower part 25 are distributed over the circumference flow through window 26, which allow in certain operating conditions of the thermostatic valve 1, a flow of coolant.
  • a circumferential seal 44 is arranged inside the valve carrier 2.
  • Another seal 24 is also arranged in the interior of the valve carrier 2 in the transition region from the axial lower part 25 to the radial foot end 28. The function of the seals 24, 44 will be explained below.
  • valve slide 3 In the interior of the valve carrier 2, a valve slide 3 is guided axially displaceable.
  • the valve slide 3 has a hollow cylindrical upper part 31, which rests radially inward on the axial lower part 25 of the valve carrier 2.
  • the valve slide 3 In the operating state of the thermostatic valve 1 shown in Figure 1, the valve slide 3 assumes its uppermost position in which an upper end 32 of the lower part 31 of the valve spool 3 sealingly abuts the seal 44, so that the valve spool 3 now closes the flow-through window 26.
  • valve slide 3 has a in its basic form also hollow cylindrical lower part 33, which, in contrast to the closed surface forming upper part 31, distributed in the circumferential direction has passage openings 34 and cooperates with an annular wall 83 in the counter flange 8.
  • the passage openings 34 have on their upper side specially shaped opening edges 35, as will be explained in more detail below.
  • valve slide 3 In addition to the radially outer upper part 31 and the lower part 33 of the valve slide 3 further has a radially inner slide member 38 which is integrally connected via a plurality of radial webs 37 with the lower part 33. Axially down the valve slide 3 has in its center an actuator contact region 36, in which the valve slide 3 is in contact with an actuator 6, which will be explained below.
  • a spring system 39 is formed in the form of outwardly projecting lugs on the underside of a valve spring 30 in the form of a helical compression spring rests with its upper end.
  • the housing 10 has on the upper side an opening 16, through which the mentioned actuator 6 is inserted from above into the housing 10 with the interposition of a seal 64.
  • the actuator 6 has a cylindrical in its basic form actuator housing 60 which extends through the interior of the valve spool 3 and the valve carrier 2 coaxial with these.
  • the actuator 6 according to FIG. 1 is an electrically operated actuator which, for this purpose, has at its upper end outside of the housing 10 an electric motor.
  • the actuator 6 of FIG Terminal 65 has. By means of a contact surface 61, the housing 60 of the actuator 6 abuts against the upper side of the housing 10 of the thermostatic valve 1 and is fixed in this position by means not shown in Figure 1 connecting means, such as screws.
  • a first, annular flow guide 4 is mounted radially inwardly from the upper part 31 of the valve slide 3, here fastened by means of screws 43 which extends concentrically to the radially inner slide member 38.
  • On its downwardly facing side of the flow guide 4 has a circumferential concave flow guide 40.
  • the first flow guide 4 On the upper side, the first flow guide 4 has a contact surface 41, with which it rests against the underside of the radial center part 23 of the valve support 2.
  • Radially inside the first flow guide 4 forms a spring support 49, on which the valve spring 30 is supported with its lower end.
  • a second flow guide 5 is arranged in the second, radially outer coolant passage 12 of the thermostatic valve 1.
  • This second flow guide 5 also has on its underside a circumferential concave flow guide surface 50.
  • FIG. 1 shows the thermostatic valve 1 in a first operating condition with cold coolant.
  • the actuator 6 has its minimum length and the valve spool 3 is displaced by means of the valve spring 30 in its uppermost position.
  • the upper part 31 of the valve spool 3 closes the flow-through windows 26 in the upper part 21 of the valve carrier 2, so that a coolant flow from the cooler through the third coolant channel 13 into the first coolant channel 1 1 is prevented.
  • the second flow guide body 5 with its flow guide surface 50 ensures a continuous and low-resistance deflection of the axial coolant flow from the second coolant channel 12 into a radially inwardly extending flow through the passage openings 34 of the valve slide 3.
  • FIG 2 shows the thermostatic valve 1 of Figure 1 in the same longitudinal section, in a second operating condition with warmer coolant.
  • the actuator 6 has a relation to the state of Figure 1 enlarged length, in which case the lower, formed by an actuating pin end 63 of the actuator 6 is pushed down towards the bottom.
  • the valve slide 3 is moved against the force of the valve spring 30 over a portion of its available axial movement distance downwards.
  • the upper end 32 of the valve spool 3 is removed from the seal 44, whereby the flow-through windows 26 are released over part of their area.
  • a limited flow cross section through the lower part 33 of the valve slide 3 is still free.
  • coolant flows both from the cooler through the third coolant channel 13 and coolant from the second coolant channel 12 into the first coolant channel 1 1. Accordingly, the coolant flows in part through the small cooling circuit which bypasses the cooler, and second, by the large cooling circuit that encloses the radiator.
  • the coolant flow which flows from the third coolant channel 13 into the thermostatic valve 1 1, is distributed over the circumference of the interior of the housing 10 and flows from there in an initially radial flow direction through the flow-through window 26 inwards. Subsequently, the coolant flow is deflected by means of the flow guide surface 40 of the first flow guide 4 steadily and with little resistance in an axial flow down into the first coolant channel 1 1.
  • FIG. 3 shows the thermostatic valve 1 from FIG. 1 in the same longitudinal section, in a third operating state with hot coolant.
  • the actuator 6 has reached its maximum length, wherein its lower end 63 is pushed out by the maximum possible way down, now the valve spring 30 is compressed to the maximum. Accordingly, now takes the valve spool 3 its lowest possible position relative to the other thermostatic valve 1 a.
  • the flow-through window 26 in the valve carrier 2 are now completely released.
  • the lower part 33 of the valve slide 3 with the passage openings 34 is now so deep in the annular wall 83, that the passage openings 34 are completely covered by the annular wall 83 and thereby closed.
  • the flow-guiding surface 40 of the first flow-guiding body 4 ensures a constant flow deflection and low-resistance flow guidance of the coolant on its way from the third coolant channel 13 through the thermostatic valve 1 into the first coolant channel 11 and further into the first coolant channel 81 in FIG Counterflange 8.
  • Figure 4 shows the thermostatic valve 1 of Figure 1 to 3 in plan view.
  • the housing 10 with its radially opening third coolant channel 13, which is designed as a connecting piece 13 'for a coolant hose, visible.
  • Figure 4 illustrates the course of the sectional plane according to the section line l-l of the longitudinal sections shown in Figures 1 to 3.
  • the actuator 6 In the center of the housing 10 is the upper-side opening 16, through which the actuator 6 visible from above is inserted into the interior of the housing 10.
  • the actuator 6 is fixed by means of two screws in its installed position; after loosening the screw, the actuator 6 can also be connected in a rotated position by 90 ° by means of two further top threaded holes 17 with the housing 10 and fixed thereto.
  • FIG. 5 shows the bell-shaped or dome-shaped housing 10 of the thermostatic valve as a single part, in view obliquely from above.
  • the top opening 16 for insertion of the not yet built-in actuator.
  • the upper-side opening 16 around the upper-side opening 16, four upper-side threaded holes 17 are arranged, which can be used for selectively fixing the actuator in two different orientations.
  • the third coolant channel 13 formed as a connecting piece 13 'opens into the housing 10.
  • On the underside is located on the housing 10 whose connection flange 18.
  • FIG. 6 shows the housing 10 from FIG.
  • connection flange 18 Facing the viewer is now the connection flange 18 with the peripheral seal 15. Outside the housing 10, the four outer screw holes 19 can be seen again. In contrast to the screw holes 19, a lower-side threaded hole 17 'is arranged in each case inside the housing 10.
  • Figure 7 shows a valve carrier 2 of the thermostatic valve as a single part in view obliquely from above.
  • the upper part 21 With the upper end face 22 is visible.
  • the upper part 21 merges into the radial middle part 23, in which several screw holes 29 are distributed in the circumferential direction.
  • the axial lower part 25 With the distribution of the windows 26 distributed over its circumference.
  • the lower end of the valve carrier 2 forms the radial end of the foot 28, in which the valve ball seat 27 is located on the far right and in which distributed over the circumference a plurality of screw holes 29 'are mounted.
  • FIG 8 shows the valve carrier 2 of Figure 7 in a view obliquely from below.
  • the view falls on the underside of the flange-like radial foot end 28 with its screw holes 29 '.
  • the foot end 28 is followed at the top of the lower part 25 with the flow-through windows 26 at.
  • the seal 24 forms a sliding seal, on which the valve slide, not visible here, slides sealingly along its axis during its adjustment.
  • the radial middle part 23 with its screw holes 29 and the sleeve-shaped upper part 21 with its upper front end 22nd
  • Figure 9 shows the valve spool 3 of the thermostatic valve as a single part in a first view obliquely from below.
  • the upper radially outer part of the valve slide 3 forms the hollow cylindrical upper part 31, which constitutes a circumferential closed surface.
  • bottom radially outer part of the valve slide 3 forms its lower part 33 with the passage openings 34.
  • the fürltechniköff- 34 limited by partially curved opening edges 35 to realize in cooperation with the annular wall 83, which is shown in Figures 1 to 3, a certain desired characteristic for the flowing through the passage openings 34 upon adjustment of the valve spool 3 volume flow of coolant ,
  • valve slide 3 From the outer region of the valve slide 3 go several, here a total of four, distributed over the circumference radial webs 37 inwardly, which merge into a radially inner slide member 38.
  • the radially inner slide part 38 forms the actuator contact region 36, with which the actuator of the thermostatic valve, which is not shown here, cooperates.
  • Axial above is the radially inner slide member 38 in the spring system 39 for the valve spring also not shown here over.
  • FIG. 10 shows the valve slide 3 from FIG. 9 in a second view, slightly twisted with respect to FIG. 9, obliquely from below.
  • the view now falls centrally on one of the passage openings 34 in order to illustrate the special course of the upper opening edges 35 of the passage openings 34.
  • Figure 1 1 shows the first, annular Strömungsleit analyses 4 of the thermostatic valve as a single part in a view obliquely from above.
  • the contact surface 41 with the screw holes 42 is visible.
  • the spring support 49 formed by radially inwardly projecting lugs 49 can be seen for the valve spring not shown here.
  • FIG. 12 shows the first flow guide body 4 from FIG. 11 in an oblique view from below, the shape and the course of the concave flow guide surface 40 being particularly clearly recognizable here.
  • the upper side is the contact surface 41st Inside the flow guide 4, the spring support 49 is still visible to a small extent. Radially outward in the flow guide 4 whose screw holes 42 are mounted.
  • Figure 13 shows the second, also annular Strömungsleit analyses 5 of the thermostatic valve as a single part in a view obliquely from below, in which case the view of the circumferential, also concave flow guide 50 falls.
  • the second flow guide 5 extend over its circumference distributed a plurality of screw holes 52 for screws for connecting the flow guide 5 with the valve carrier 2.
  • the rightmost in Figure 13, the vent opening 57 of the vent valve can be seen.
  • FIG. 14 shows the second flow guide body 5 from FIG. 13 in a view obliquely from above, whereby the distribution of the screw holes 52 becomes particularly clear. Also in Figure 14 rightmost the vent opening 57 is visible.
  • Figure 15 shows a first actuator 6 of the thermostatic valve in view.
  • the actuator 6 has a cylindrical housing 60 in its basic form, in which the known parts of the actuator are arranged.
  • the example according to FIG. 15 is an electrically adjustable actuator 6, which has an electrical connection 65 at its head part for this purpose.
  • the head part of the actuator 6 forms in two opposite, radially outwardly projecting areas depending on a lower-side contact surface 61 for abutment of the actuator 6 to the top of the housing in the assembled state.
  • Through the screw holes 62 in the head part of the actuator 6 screws for fixing the actuator 6 on the housing 10 can be performed.
  • the seal 64 the actuator 6 is sealable against the housing.
  • the lower end 63 of the actuator 6 is formed by an extendable and retractable actuating pin, which cooperates with the above already described AktuatorWallet Quarry the valve spool.
  • the adjustment of the lower end 63 of the actuator so the adjustment of the length of the actuator 6, in accordance with electrical signals, which are supplied, for example, from an electronic engine control unit of an associated internal combustion engine, via the electrical connection 65 ,
  • FIG. 16 shows, as an alternative to the example according to FIG. 15, a second actuator 6 of the thermostatic valve, likewise in view, this being an actuator 6 with an expanding body whose length changes as a function of the ambient temperature and the lower end 63 of the actuator 6 extends or retracts accordingly.
  • An electrical connection does not need the actuator 6 of Figure 15.
  • the two actuator examples match, so that the actuators 6 according to FIG. 15 or FIG. 16 can be optionally installed in the housing 10.
  • FIG. 17 shows a preassembled unit comprising valve slide 3, valve spring 30 and first flow guide body 4 in a first view obliquely from above.
  • valve spring 30 is spatially very cheap and space-saving housed inside the valve spool 30.
  • first flow guide 4 is located in a spatially favorable arrangement in the valve slide. 3
  • FIG. 18 shows the unit from FIG. 17 in a view obliquely from below, the lower part 33 of the valve slide 3 being particularly clearly visible here. Above in Figure 18, an upper portion of the valve spring 30 is visible, which is supported with its upper end to the spring system 39.
  • FIG. 19 shows a preassembled unit comprising valve carrier 2, valve slide 3 and valve spring 30, in a first view obliquely from above.
  • valve carrier 2 valve slide 3 and valve spring 30, in a first view obliquely from above.
  • the valve carrier 2 with its parts is visible, since the valve slide 3 is located completely inside the valve carrier 2. Only through the flow-through window 26 through parts of the hollow cylindrical upper part 31 of the valve spool 3 are visible.
  • an upper end region of the radially inner slide part 38 with the spring system 39 for the valve spring 30, which is likewise partially visible, can be seen.
  • FIG. 20 shows the unit from FIG. 19 in a view obliquely from below.
  • the bottom part 33 of the valve slide 3 which protrudes from the valve carrier 2 at the bottom can be seen particularly clearly, which has in its periphery the passage openings 34 with the specially shaped upper opening edges 35.
  • the radial webs 37 extend inwards to the radially inner slide part 38 with the actuator contact region 36 visible here.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

L'invention concerne une soupape thermostatique (1) d'un système de refroidissement d'un moteur à combustion interne, la soupape thermostatique (1) présentant un carter (10) muni d'une bride de raccordement (18) et dans lequel sont agencés radialement à l'intérieur un premier conduit (11) de fluide de refroidissement et radialement à l'extérieur un deuxième conduit (12) de fluide de refroidissement, un troisième conduit (13) de fluide de refroidissement étant agencé sur le carter (10) et un tiroir de soupape (3) étant guidé mobile dans le carter (10) entre deux positions de fin de course en fonction de la température, le tiroir de soupape (3) étant sollicité d'une part par un ressort de soupape (30) et d'autre part par un actionneur (6). La soupape thermostatique (1) selon l'invention est caractérisée en ce que dans le premier conduit (11) de fluide de refroidissement est agencé radialement à l'intérieur par rapport au tiroir de soupape (3) un premier élément de guidage du flux (4) périphérique déviant un écoulement du fluide de refroidissement du troisième conduit (13) de fluide de refroidissement vers le premier conduit (11) de fluide de refroidissement d'une direction d'écoulement orientée axialement vers l'intérieur à une direction orientée axialement, et en ce que dans le second conduit (12) de fluide de refroidissement est agencé radialement à l'extérieur par rapport au tiroir de soupape (3), un second élément de guidage du flux (5) périphérique déviant un écoulement du fluide du deuxième conduit (12) de fluide de refroidissement vers le premier conduit (11) de fluide de refroidissement d'une direction d'écoulement axiale à une direction d'écoulement orientée radialement vers l'intérieur.
PCT/EP2016/075042 2015-10-20 2016-10-19 Soupape thermostatique d'un système de refroidissement d'un moteur à combustion interne WO2017067961A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015117827.3A DE102015117827A1 (de) 2015-10-20 2015-10-20 Thermostatventil eines Kühlsystems einer Brennkraftmaschine
DE102015117827.3 2015-10-20

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FR3126732A1 (fr) * 2021-09-06 2023-03-10 Psa Automobiles Sa Moteur thermique du type diesel de vehicule automobile equipe d’un boitier de sorties de fluide

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